High Seas Forecast
Issued by NWS

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FZPN40 PHFO 231534
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN JUL 23 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT
OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN
TWICE THE SIGNIFICANT WAVE HEIGHT.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC JUL 23 2017.
24 HOUR FORECAST VALID 1200 UTC JUL 24 2017.
48 HOUR FORECAST VALID 1200 UTC JUL 25 2017.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM KULAP N OF AREA NEAR 31.4N 165.2E 995 MB MOVING WNW
08 KT. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. OVER FORECAST
WATERS...WINDS 34 KT OR GREATER AND SEAS 12 FT OR GREATER WITHIN 80
NM SE QUADRANT. WINDS 20 TO 33 KT ELSEWHERE N OF 29N BETWEEN 164E
AND 169E. SEAS 8 TO 12 FT ELSEWHERE N OF LINE FROM 30N170E TO
26N160E. ISOLATED MODERATE TSTMS N OF 15N W OF 172W.
.24 HOUR FORECAST TROPICAL STORM KULAP N OF AREA. OVER FORECAST
WATERS...WINDS EASED TO 20 KT OR LESS. SEAS SUBSIDED TO 8 FT OR LESS.

.SYNOPSIS AND FORECAST.

.LOW 20N151W 1012 MB MOVING W 10 KT AND DISSIPATING. WINDS 20 TO
25 KT...SEAS 8 TO 9 FT FROM 20N TO 23N BETWEEN 148W AND 152W.
ISOLATED MODERATE TSTMS FROM 21N TO 24N BETWEEN 147W AND 152W.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 22N156W TO 18N157W.
WINDS 20 TO 25 KT...SEAS 8 TO 9 FT FROM 21N TO 24N BETWEEN 152W AND
156W.
.48 HOUR FORECAST TROUGH FROM 24N162W TO 20N163W. WINDS DIMINISHED
TO 20 KT OR LESS. SEAS LOWERED TO 8 FT OR LESS.

.TROUGH FROM 23N163W TO 17N165W MOVING W 10 KT. ISOLATED MODERATE
TSTMS FROM 19N TO 24N BETWEEN 157W AND 166W.
.24 HOUR FORECAST TROUGH FROM 24N168W TO 18N169W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 10N175E TO 04N173E MOVING W 15 KT. WINDS 20 TO 25
KT...SEAS 8 TO 9 FT FROM 07N TO 09N BETWEEN 173E AND 176E. SCATTERED
MODERATE TO STRONG TSTMS FROM 04N TO 10N BETWEEN 171E AND 178E...AND
FROM 00N TO 05N BETWEEN 163E AND 168E. ISOLATED MODERATE TO STRONG
TSTMS ELSEWHERE S OF 14N W OF 171E...AND S OF 11N BETWEEN 171E AND
175W.
.24 HOUR FORECAST TROUGH FROM 09N167E TO 06N166E. WINDS EASED TO 20
KT OR LESS. SEAS 8 FT OR LESS.
.48 HOUR FORECAST TROUGH FROM 10N161E TO 06N161E.

.48 HOUR FORECAST WINDS 20 TO 30 KT W OF 163E N OF 22N.

.RIDGE FROM 30N170W TO 20N175E TO 17N160E NEARLY STATIONARY.

.SEAS 8 TO 9 FT S OF 03N BETWEEN 153W AND 172W.
.24 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LESS.
.48 HOUR FORECAST SEAS 14 TO 20 FT W OF 162E BETWEEN 23N AND 29N.
SEAS 8 TO 14 FT ELSEWHERE W OF 164E N OF 19N.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LOWER.

.ITCZ FROM 07N140W TO 06N159W TO 04N175W. ISOLATED MODERATE TSTMS S
OF 10N BETWEEN 175W AND 164W...AND FROM 05N TO 10N E OF 164W.

.ISOLATED MODERATE TSTMS FROM 10N TO 12N BETWEEN 150W AND 157W.

$$

.HONOLULU HI.



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